Page 124 - Petroleum Production Engineering, A Computer-Assisted Approach

Guo, Boyun / Computer Assited Petroleum Production Engg 0750682701_chap10 Final Proof page 119 4.1.2007 8:26pm Compositor Name: SJoearun

SEPARATION SYSTEMS 10/119

Gas outlet

Final centrifugal
gas−liquid
separation section

Inlet diverter baffle

Well/Stream
inlet
Gas equalizer pipe

Liquid quieting Liquid−level
baffle control

Liquid
discharge
valve

Drain connection

Liquid
outlet
Figure 10.1 A typical vertical separator (courtesy Petroleum Extension Services).

Figure 10.2 A typical horizontal separator (courtesy Petroleum Extension Services).

section into the lower tube section. Horizontal double- separates from the oil or condensate. Three-phase sep-
tube separators have all the advantages of normal aration can be accomplished in any type of separator.
horizontal single-tube separators, plus much higher liquid This can be achieved by installing either special internal
capacities. baffling to construct a water leg or water siphon arrange-
Figure 10.4 illustrates a horizontal oil–gas–water three- ment. It can also be achieved by using an interface liquid-
phase separator. This type of separator is commonly used level control. In three-phase operations, two liquid dump
for well testing and in instances where free water readily valves are required.